Feed mechanism for saw-mills



(N0 M0de1.) 2 Sheets-Sheet 1 A. P. GIBSON.

FEED MECHANISM FOR SAW MILLS.

No. 386,195. Patented July 17, 1888.

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Q 06 Q0 W p A MMGLaZJm (No Model.) 2 Sheets-Sheet 2.

A. P. GIBSON.

FEED MEGHANISMIOR SAW MILLS. No. 386,196. Patented July 17, 1888.

UNITED STATES PATENT Orricit.

ALEXANDER PITMON GIBSON, OF MOUNT IDA, VEST VIRGINIA.

FEED MECHANISM FOR SAW-MILLS.

SPECIFICATION forming part of Letters Patent No. 386,195, dated July 17, 1888.

Application filed February 27, I888. Serial No. 265,430.

To all whom it may concern.-

Be it known that I, ALEXANDER PITMON GIBSON, a citizen of the United States, residing at Mount Ida, in the county of Fayette and State of West Virginia, have invented a new and useful Improvement in Feed Mechanism forSaw-Mills, of which the following is a specification.

This invention has reference to feeding de vices for saw mills and machines; and it consists in the improvements hereinafter de-' scribed, whereby an efficient and positivelyactuated apparatus is provided.

In the accompanying drawings, forming part of this specification, Figure l is a perspective view. Fig. 2 is a plan view showing the parts adjusted to reverse the carryingfeed, and Fig. 3 is a detail view of one of the bearings.

A designates the frame ofthe machine, which is suitably supported, and comprises the end bars, It 1), side bars, 0, and intermediate parallel bars, (Z 6. The upper edges of the bars d e are recessed in transverse line, with bearing-boxes flocated on the upper side of the said bars 0 c. A transverse shaft, B, turns in said bearings and is provided between the barsc 6 with a pulley suitable for communicating movement to the feed-carriage. Adjacent to the inner side of each of the bars d e on the shaft B are located metal disks 0 I), the inner faces of which are vertical and planed smooth, while the outer side of each is convexed. Between the intermediate bars, (I e, is located an inclined block, E, which is recessed on its upper side to form a central hearing for a longitudinal shaft, F, retained in position by a section, f, bolted to the block E. A block, G, is also located between the bars (I e, and is inclined parallel with the block E, and said block G is also recessed to form a hearing for a smaller box, G, a section, 9, bolted on the box G, forming a closed bearing. The said shalt F is provided at its ends with the wheels II H, the wheel at the inner or upper end having the greater diameter. Each wheel H H is provided with a frictionperiphery, h, which may be built up of paper or otherwise, as may be desirable. A horizontal bell-crank lever, j, is pivoted upon the upper face of the bar d and has one of its ends connected by a link, is, with the box G,while (No model:

the other end is attached to a vertical lever, I, provided at one end of the frame. Two collars, Z, are formed upon the shaft F between the blocks E and G, and said shaft, be tween said collars, is embraced by the transverse portion J ofan angle-frame, K, the longitudi nal portion of which is horizontally slotted for the passage of guide-boltsm. The free end of the frame has connected thereto the lower end of a lever, M, which is pivoted on the inner side of the bar 6.

N designates the drive-shaft, which is journalcd in the bars 0 d and is adapted to be driven from any desirable power source, and is provided on its inner end with a disk, 0, plane-faced upon its inner side to afford a proper frictional bearing for the wheel II.

By operating the lever llI so as to shift the frame K on its guide-bolts the shaft F may be shifted longitudinally, so as to bring the wheel H in its contact with the disk 0 farther from or nearer to the center of said disk, and thus vary the degree of rotation at which the shaft is driven. If the movement of the shaft is toward the center of the disk, then the shaft F will be driven at a greater speed. The increased diameter of theinncr wheel, ofcourse, in moving back, makes provision for the difference that would be occasioned by changing the contact of the said wheel with the disks on the feed-shaft. By moving the lever I the bell-crank-lever connections willservetotransversely move the shaft in block G, so as to change the contact of the wheel II from disk 0 to D, or vice versa.

From the preceding description -it will be seen that the device is not only of simple and durable construction, but that its parts may be readily operated to secure the various adj ustments with but little attendant vibration.

Having thus described my invent-ion, I claim 1. The combination, with the feed-shaft provided with the disks 0 D, of the transverselymovable bearing-boxes, a shaft, F, journaled in said boxes and longitudinally movable therein, friction-wheels H H, of different diameters, secured on said shaft, a lever connected to said shaft F to move the same in its bearings, and a drive-disk contacting with the wheel H, substantially as specified.

2. The combination, with the feed-shaft provided with the disks 0 D, of the shaft F, bearnear one end of said journal-box, a link coning in bars and longitudinally movable therenecting said lever to the journal-box, and an in, friction-wheels H H, of different diameters, operating-lever connected to the bell'crank 1 secured on said shaft, a frame, K, slotted to lever, as set forth.

5 play on guide-bolts and having a portion em- In testimony that I claim the foregoing as my bracing said shaft F, and a lever for shifting ownI have hereto affixed my signature in pressaid frame and shaft, substantially as specified. ence of two Witnesses.

3. The combination of the longitudinallymovable shaft F, having the friction-wheels ALEXANDER PITMON GIBSON 10 H H, a driveshaft having a disk contacting Witnesses:

with the wheel H, a journal-box receiving the E. G. SIGGERS, shaft F, a horizontal bell-crank lever arranged I J. H. SIGGERS. 

